4.02 Imaging

Question 1

Discovered xray

Answer 1

Wilhelm Conrad Roentgen

Question 2

How are xrays similar to visible light and how are they different?

Answer 2

X-rays are electromagnetic waves, like visible light, but have shorter wavelengths

Question 3

Terminologies used for the interpretation of x-ray images

Answer 3

Opacities and lucencies

Question 4

4 most common examinations

Answer 4

chest
abdomen
extremities
spine

Question 5

X-ray modality that offers continuous imaging of the motion of internal structures; serial images can be produced

Answer 5

Fluoroscopy

Question 6

Renal application of fluoroscopy where the contrast is injected through a peripheral vein

Answer 6

Intravenous pyelogram/excretory urography (IVP)

Question 7

Renal application of fluoroscopy where the contrast is instilled in ureteral meatus

Answer 7

Retrograde Pyelogram (RGP)

Question 8

Renal application of fluoroscopy where the contrast is instilled through the urethra, bladder filled up, serial images taken while the patient is voiding

Answer 8

Voiding Crystourethrography (VCUG)

Question 9

Element used for the alimentary tract applications of fluoroscopy

Answer 9

barium

Question 10

Fluoroscopy that is done as part of infertility work-up, and the contrast is instilled via the vagina

Answer 10

Hysterosalpingogram

Question 11

Images are formed by shooting x-rays through a person circumferentially; it is a rotating tube

Answer 11

computed tomography scan

Question 12

Two types of CT scans and the difference between the two of them

Answer 12

Conventional or axial scanners and helical or spiral scanners; the former takes sequential photographs per segment, while the latter takes non-stop images while spiraling around the patient

Question 13

Terminologies used for CT scans

Answer 13

density and attenuation

Question 14

Contrast that is orally or rectally administered and it opacifies the stomach, small and large bowel

Answer 14

Gastrointestinal contrast

Question 15

Contrast used to make abnormalities more conspicuous and to increase the density of various organs

Answer 15

Intravenous contrast

Question 16

Imaging device that makes use of high frequency sound; what do you call the component of the device that emits the sound waves that makes this device work?

Answer 16

Ultrasound; transducer

Question 17

Terminology for interpretation of ultrasound output; what does it pertain to?; what are the different levels?

Answer 17

Echogenicity - ability of an object to reflect sound waves and produce echoes

1. hyperechoic
2. hypoechoic
3. anechoic

Question 18

Kind of ultrasound that includes technology to measure and analyze blood flow

Answer 18

Doppler ultrasound

Question 19

Noninvasive study that uses magnets and radio waves to produce images of internal structures

Answer 19

Magnetic Resonance Imaging

Question 20

What structure in the human body does not produce images in the MRI that gives this particular imaging modality an advantage to see usually obscured structures?

Answer 20

bone

Question 21

Imaging modality best for people who have allergic reactions to contrasts

Answer 21

MRI

Question 22

Imaging modality better for people who have metallic implants in their body

Answer 22

All mentioned except for MRI

Question 23

T/F. Patients are required to move while under the MRI, to see which parts of the brain are stimulated when they do certain activities, e.g. squeezing a stress ball.

Answer 23

False. You can’t move in an MRI.

Question 24

Terminology used for MRI imaging interpretation and its levels

Answer 24

Signal intensity;
hyperintense
hypointense
isointense